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Issue - Too many recipients in Outlook
A lot of times, a user will click on something by accident and change their view and be unsure of how to get it back. Sometimes when a user tries to search in Outlook, it either returns incomplete results, or returns nothing at all, even if you can see the email normally. Most times, this is caused by a corrupted search index, which you can rebuild. Keep in mind this does take a while, and it’s usually best done after the user has left for the day. Sometimes you’ll open Outlook and then for no apparent reason, it will freeze or shut itself down.
Is antivirus software running?
If you have Outlook in your startup folder, remove the shortcut from the startup folder. You may see one of the following errors in a pop-up message on your screen. If you are unable to connect or are prompted for your password repeatedly attempt the following options.

Resolution - Too many recipients in Outlook
Clear the cache or recreate the Outlook profile if performance is degraded or errors persist. No matter how well written add-ins are (and even Outlook itself), there will always be the occasional Outlook problem that doesn’t seem to go away or may not be related to add-ins at all. You can read how to fix your Outlook problem on the internet, but sometimes the suggestions don’t work for your specific case. So, we have produced this list of general things to try to resolve your problem in Outlook.
How to troubleshoot connectivity issues

You can start Outlook in safe mode, disable your add-ins, and then try to open Outlook normally. The settings in the Send/Receive Group windows let you customize the synchronization rate of the new group. Make sure Outlook is updated to the latest version to benefit from bug fixes and performance improvements. Ensure all IMAP/POP3 and SMTP settings are up to date as per your provider’s documentation. If you ran SaRA in Step 3, and you created a new profile, you can skip all of Step 4. This option could be useful if you constantly have to wait for Outlook to rebuild its data file when you restart.
- Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
- Message 2 - The file you're attaching is bigger than the server allows.
- Be aware that if you are connecting to an Exchange Server mailbox, your mailbox or your email messages are already being scanned by antivirus software on the server.
- No matter how well written add-ins are (and even Outlook itself), there will always be the occasional Outlook problem that doesn’t seem to go away or may not be related to add-ins at all.
Software-related Issues
TrustedTech is dedicated to being a reliable resource for all software and technology support needs. Our relationship to the Microsoft Partner Network allows us to provide competitive pricing and authentic software and support, all with a much-needed human element. The maximum number of distribution group members is 100,000 members, and the recipient rate limit is 10,000 recipients per day. If you need to increase the number of this limit try the next resolution. Step 1 - The hard limit of recipients for a single email message is 300.
Is there a tool to fix Outlook issues?
You might need to set Windows Update to automatically download and install recommended updates. Installing any important, recommended, and optional updates can often correct problems by replacing out-of-date files and fixing vulnerabilities. To install the latest Windows and Office updates, click the link below. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. If Outlook shows Disconnected at the bottom of the status bar, this issue may occur due to improper Autodiscover resolution.